firstcom.com.vn - dns.ninja

`firstcom.com.vn`

DNSSEC	⚠️ Not signed
NS	`ns-b3.tenten.vn` ⭐
		A	2404:f080:1101:321:a150:95:110:1232^{🇻🇳 GMO-ZCOM-AS-VN2404:f080:1000::/36 GMO-Z.com RUNSYSTEM JSC. Ocean Park Building 6th Floor, 1 Dao Duy Anh, Phuong Mai Ward, Dong Da Dist, Ha Noi}
			PTR	`va150-95-110-123-2.a00e.g.han1.static.cnode.io`
		A	163.44.207.21^{🇻🇳 GMO-ZCOM-AS-VN163.44.206.0/23 RUNSYSTEM-VN}
			PTR	`v163-44-207-21.a006.g.han1.static.cnode.io`
NS	`ns-b1.tenten.vn`
		A	2404:f080:1101:321:a150:95:110:1230^{🇻🇳 GMO-ZCOM-AS-VN2404:f080:1000::/36 GMO-Z.com RUNSYSTEM JSC. Ocean Park Building 6th Floor, 1 Dao Duy Anh, Phuong Mai Ward, Dong Da Dist, Ha Noi}
			PTR	`va150-95-110-123-0.a00e.g.han1.static.cnode.io`
		A	137.59.104.67^{🇻🇳 GMO-ZCOM-AS-VN137.59.104.0/22 RUNSYSTEM-VN}
			PTR	`static-pool.tenten.vn`
NS	`ns-b2.tenten.vn`
		A	2404:f080:1101:321:a150:95:110:1231^{🇻🇳 GMO-ZCOM-AS-VN2404:f080:1000::/36 GMO-Z.com RUNSYSTEM JSC. Ocean Park Building 6th Floor, 1 Dao Duy Anh, Phuong Mai Ward, Dong Da Dist, Ha Noi}
			PTR	`va150-95-110-123-1.a00e.g.han1.static.cnode.io`
		A	137.59.104.68^{🇻🇳 GMO-ZCOM-AS-VN137.59.104.0/22 RUNSYSTEM-VN}
			PTR	`static-pool.tenten.vn`
MX	`mx2.zoho.com` ⭐
		A	204.141.33.44^{🇺🇸 ZohoAS204.141.32.0/23 PNAP-DAL CASE00103239}
MX	`mx.zoho.com`⁽²⁰⁾
		A	204.141.43.44^{🇺🇸 ZohoAS204.141.42.0/23 Zoho Corporation}
SOA	`ns-b3.tenten.vn`root@firstcom.com.vn serial=1780990417

`com.vn`

	DNSSEC	⚠️ Not signed
	NS	`dns-master.vnnic.vn` ⭐
	NS	`a.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`b.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`c.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`d.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`e.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`f.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`g.dns-servers.vn` ⚠️ Not in parent delegation
	NS	`h.dns-servers.vn` ⚠️ Not in parent delegation
	SOA	`dns-master.vnnic.vn`postmaster@vnnic.vn serial=2022780894

Same first word

firstcom.cn

firstcom.com.sg

firstcom.cl

firstcom.ch

firstcom.net

firstcom.hu

firstcom.kr

firstcom.com.br

firstcom.com

firstcom.com.pe

firstcom.dk

firstcom.vn

firstcom.fr

firstcom.co.uk

firstcom.ru

firstcom.eu

firstcom.no

firstcom.co.kr

firstcom.com.vn

firstcom.org

firstcom.de

Similar names

DNS History

12 records (5 active, 7 former)

●NSns-b1.tenten.vn2026-02-26 → 2026-06-29 · 3 obs

○ 2016-07-12 19:28:20
● 2026-02-26 16:41:10
● 2026-06-29 01:18:16

●NSns-b2.tenten.vn2026-02-26 → 2026-06-29 · 3 obs

○ 2016-07-12 19:28:20
● 2026-02-26 16:41:10
● 2026-06-29 01:18:16

●NSns-b3.tenten.vn2026-02-26 → 2026-06-29 · 3 obs

○ 2016-07-12 19:28:20
● 2026-02-26 16:41:10
● 2026-06-29 01:18:16

○NSns.firstcom.com.vn2015-06-05 → 2016-07-12 · 4 obs

● 2015-06-05 10:54:48
● 2016-07-12 19:28:20
○ 2026-02-26 16:41:10
○ 2026-06-29 01:18:16

○NSns1.hcmc.netnam.vn2015-06-05 → 2016-07-12 · 4 obs

● 2015-06-05 10:54:48
● 2016-07-12 19:28:20
○ 2026-02-26 16:41:10
○ 2026-06-29 01:18:16

○NSns2.hcmc.netnam.vn2015-06-05 → 2016-07-12 · 4 obs

● 2015-06-05 10:54:48
● 2016-07-12 19:28:20
○ 2026-02-26 16:41:10
○ 2026-06-29 01:18:16

○MXmail.firstcom.com.vn2015-06-05 → 2016-01-20 · 4 obs

● 2015-06-05 10:54:48
● 2016-01-20 10:34:28
○ 2016-04-10 12:26:38
○ 2026-06-29 01:18:16

●MXmx.zoho.com2016-04-10 → 2026-06-29 · 3 obs

○ 2016-01-20 10:34:28
● 2016-04-10 12:26:38
● 2026-06-29 01:18:16

●MXmx2.zoho.com2016-04-10 → 2026-06-29 · 3 obs

○ 2016-01-20 10:34:28
● 2016-04-10 12:26:38
● 2026-06-29 01:18:16

○A103.138.88.692026-06-26 → 2026-06-26 · 3 obs

○ 2016-04-10 12:26:38
● 2026-06-26 19:35:44
○ 2026-06-29 01:18:16

○A119.17.253.1772015-06-05 → 2015-12-15 · 4 obs

● 2015-06-05 10:54:48
● 2015-12-15 07:19:10
○ 2016-01-20 10:34:28
○ 2026-06-29 01:18:16

○A210.86.239.382016-01-20 → 2016-01-20 · 4 obs

○ 2015-12-15 07:19:10
● 2016-01-20 10:34:28
○ 2016-04-10 12:26:38
○ 2026-06-29 01:18:16

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
vn	c.dns-servers.vn, a.dns-servers.vn, e.dns-servers.vn, g.dns-servers.vn...	-
firstcom.com.vn	ns-b2.tenten.vn, ns-b1.tenten.vn, ns-b3.tenten.vn	-

✅ Authoritative Response

Server:163.44.207.21

NS records: ns-b2.tenten.vn, ns-b1.tenten.vn, ns-b3.tenten.vn

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstcom.com.vn (unsigned zone)

⏱️ Timing

Total: 2244ms | Queries: -

📄 Records

Type	Count	Sample Data
MX	2	`mx.zoho.com (pri: 10), mx2.zoho.com (pri: 20)`
SOA	1	`ns-b3.tenten.vn root.firstcom.com.vn`

Analysis

Name Servers

firstcom.com.vn has three name servers — ns-b1.tenten.vn, ns-b2.tenten.vn and ns-b3.tenten.vn.

firstcom.com.vn has at least partial name server overlap with other domains, such as mailinhhanoi.vn, kujiale.com.vn, vuacuacamau.vn and two others.

These name servers tend to appear together with the name servers ns-a1.tenten.vn, ns-a2.tenten.vn and ns-a3.tenten.vn.

Each of ns-b1.tenten.vn, ns-b2.tenten.vn and ns-b3.tenten.vn points to two IP numbers. ns-b1.tenten.vn points to 137.59.104.67 and 2404:f080:1101:321:a150:95:110:1230. ns-b2.tenten.vn points to 137.59.104.68 and 2404:f080:1101:321:a150:95:110:1231. ns-b3.tenten.vn points to 163.44.207.21 and 2404:f080:1101:321:a150:95:110:1232.

Mail Servers

firstcom.com.vn is served by two mail servers, mx2.zoho.com and mx.zoho.com.

Among the domains sharing a mail server setup with firstcom.com.vn are persone.space, mikanani.me, segurizalo.com and two others.

There is at least a partial MX overlap between firstcom.com.vn and other domains, including iotadevices.com, christineadams.co.za, mail.algeelogistics.com and two others.

These mail servers often co-occur with the mail servers mx3.zoho.com.

mx2.zoho.com directs to 204.141.33.44 and mx.zoho.com directs to 204.141.43.44; each host name points to exactly one IP number.